I am sorry I must not be explaining myself well, we want to test the instruments in situ of the actual test place. When tests like these are carried out it can days to set up the test, all the sensors (100's) sometimes, have to be placed, measured out precisely, documented, and then tested. The...
Hi Boneh3ad, maybe my understanding is incorrect but I understood that any pressure wave produced inside a shock tube is dissipated very quickly when in open air rather than the confines of the shock tube. What I want to be able to do is "fire" that pressure blast a distance of 5M. So what need...
boneh3ad, many thanks, but the goal is not to compare the same blast, we would only require a small segment of the full 360 blast wave that would be created by a standard open air test. So we hope by only looking at one segment of the over all 360 degree effect we can cause the same readings...
Many thanks for your thoughts Bobbywhy, I was hoping to use some sort of barrel with a smaller amount of HE to give the directed blast wave, like an open ended shock tube if you like. But I have no real ideal how quickly any blast wave would disperse in open air once it had left the confines of...
Many thanks
Many thanks for all your useful comments. I understand that the basic shape of the blast wave would be spherical, if we ignore for now any ground reflections etc. Let's say that at 5 meters distance from a 1Kg charge we would see a 1 atmosphere (15 psi) over pressure for a 360...
I would like some help in understanding the basics of a blast caused by an explosion. The company I work for supply instrumentation systems which are then connected to accelerometers to measure shock and air blast sensors to measure the pressure wave caused by any ballistic blast. I would like...